Inhibition and reinforcement of reaction in the frog rana clamitans
β Scribed by Yerkes, Robert M.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1904
- Weight
- 584 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0092-7015
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π SIMILAR VOLUMES
## Abstract Fertilization of __R. clamitans__ eggs in their native jelly occurred when inseminated with high concentrations of __R. catesbeiana__ sperm. Contrary to previous evidence, the block to crossβfertilization of the __R. clamitans__ Γ __R. catesbeiana__ hybrids may form in nature.
Northern leopard frogs (Rana pipiens) and green frogs (Rana clamitans) were evaluated at eight wetland sites, four of which were within apple orchards, to determine if environmental changes associated with orchard management affected measured biological parameters. Size, age, genetic variation, cond